When a high-speed passenger train traveling at vP = 160 km/h rounds a bend, the engineer is shocked to see that a locomotive has improperly entered onto the track from a siding and is a distance D = 652 m ahead (see the figure). The locomotive is moving at vL = 30 km/h. The engineer of the passenger train immediately applies the brakes. Assume that an x axis extends in the direction of motion. What must be the constant acceleration along that axis if a collision is to be just avoided?
Answers: 2
Physics, 21.06.2019 22:30
An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)
Answers: 1
Physics, 22.06.2019 08:30
The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.
Answers: 2
Physics, 22.06.2019 12:40
Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)
Answers: 1
Physics, 22.06.2019 16:30
In the nineteenth century, gregor mendel first determined some basic rules of genetics that have been observed throughout all types of life. no observations have disproved these basic rules of genetics. charles darwin developed the idea of biological evolution around the same time, but he was unaware of mendel’s discoveries in genetics. over a century later, darwin’s idea of evolution was modified in order to incorporate mendel’s rules of genetics along with the other evidence that darwin had used. what is most likely the relationship between mendel’s rules of genetics and darwin’s idea of biological evolution? a.)mendel’s genetics states laws that are now part of the theory of biological evolution.b.)biological evolution states laws that are part of mendel’s theory of genetics.c.)mendel’s genetics replaced darwin’s entire concept of biological evolution.d.)biological evolution is a law that explains why all genetics exist.
Answers: 1
When a high-speed passenger train traveling at vP = 160 km/h rounds a bend, the engineer is shocked...
English, 09.10.2019 22:00
Mathematics, 09.10.2019 22:00
Social Studies, 09.10.2019 22:00
Geography, 09.10.2019 22:00
World Languages, 09.10.2019 22:00
Computers and Technology, 09.10.2019 22:00
Physics, 09.10.2019 22:00
Biology, 09.10.2019 22:00
English, 09.10.2019 22:00